Precalculus Examples

$\frac{x - 3}{x^{2} \cdot 4} - \frac{x + 2}{x^{2} - 5 x + 6} - \frac{2}{x - 2}$

Step 1

Find the common denominator.

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Step 1.1

Move $4$ to the left of $x^{2}$ .

$\frac{x - 3}{4 \cdot x^{2}} - \frac{x + 2}{x^{2} - 5 x + 6} - \frac{2}{x - 2}$

Step 1.2

Multiply $\frac{x - 3}{4 \cdot x^{2}}$ by $\frac{(x^{2} - 5 x + 6) (x - 2)}{(x^{2} - 5 x + 6) (x - 2)}$ .

$\frac{x - 3}{4 \cdot x^{2}} \cdot \frac{(x^{2} - 5 x + 6) (x - 2)}{(x^{2} - 5 x + 6) (x - 2)} - \frac{x + 2}{x^{2} - 5 x + 6} - \frac{2}{x - 2}$

Step 1.3

Multiply $\frac{x - 3}{4 \cdot x^{2}}$ by $\frac{(x^{2} - 5 x + 6) (x - 2)}{(x^{2} - 5 x + 6) (x - 2)}$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 \cdot x^{2} ((x^{2} - 5 x + 6) (x - 2))} - \frac{x + 2}{x^{2} - 5 x + 6} - \frac{2}{x - 2}$

Step 1.4

Multiply $\frac{x + 2}{x^{2} - 5 x + 6}$ by $\frac{4 (x - 2) x^{2}}{4 (x - 2) x^{2}}$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 \cdot x^{2} ((x^{2} - 5 x + 6) (x - 2))} - (\frac{x + 2}{x^{2} - 5 x + 6} \cdot \frac{4 (x - 2) x^{2}}{4 (x - 2) x^{2}}) - \frac{2}{x - 2}$

Step 1.5

Multiply $\frac{x + 2}{x^{2} - 5 x + 6}$ by $\frac{4 (x - 2) x^{2}}{4 (x - 2) x^{2}}$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 \cdot x^{2} ((x^{2} - 5 x + 6) (x - 2))} - \frac{(x + 2) (4 (x - 2) x^{2})}{(x^{2} - 5 x + 6) (4 (x - 2) x^{2})} - \frac{2}{x - 2}$

Step 1.6

Multiply $\frac{2}{x - 2}$ by $\frac{4 (x^{2} - 5 x + 6) x^{2}}{4 (x^{2} - 5 x + 6) x^{2}}$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 \cdot x^{2} ((x^{2} - 5 x + 6) (x - 2))} - \frac{(x + 2) (4 (x - 2) x^{2})}{(x^{2} - 5 x + 6) (4 (x - 2) x^{2})} - (\frac{2}{x - 2} \cdot \frac{4 (x^{2} - 5 x + 6) x^{2}}{4 (x^{2} - 5 x + 6) x^{2}})$

Step 1.7

Multiply $\frac{2}{x - 2}$ by $\frac{4 (x^{2} - 5 x + 6) x^{2}}{4 (x^{2} - 5 x + 6) x^{2}}$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 \cdot x^{2} ((x^{2} - 5 x + 6) (x - 2))} - \frac{(x + 2) (4 (x - 2) x^{2})}{(x^{2} - 5 x + 6) (4 (x - 2) x^{2})} - \frac{2 (4 (x^{2} - 5 x + 6) x^{2})}{(x - 2) (4 (x^{2} - 5 x + 6) x^{2})}$

Step 1.8

Reorder the factors of $4 \cdot x^{2} ((x^{2} - 5 x + 6) (x - 2))$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)} - \frac{(x + 2) (4 (x - 2) x^{2})}{(x^{2} - 5 x + 6) (4 (x - 2) x^{2})} - \frac{2 (4 (x^{2} - 5 x + 6) x^{2})}{(x - 2) (4 (x^{2} - 5 x + 6) x^{2})}$

Step 1.9

Reorder the factors of $(x^{2} - 5 x + 6) (4 (x - 2) x^{2})$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)} - \frac{(x + 2) (4 (x - 2) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)} - \frac{2 (4 (x^{2} - 5 x + 6) x^{2})}{(x - 2) (4 (x^{2} - 5 x + 6) x^{2})}$

Step 1.10

Reorder the factors of $(x - 2) (4 (x^{2} - 5 x + 6) x^{2})$ .

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2))}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)} - \frac{(x + 2) (4 (x - 2) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)} - \frac{2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2

Simplify terms.

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Step 2.1

Combine the numerators over the common denominator.

$\frac{(x - 3) ((x^{2} - 5 x + 6) (x - 2)) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2

Simplify each term.

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Step 2.2.1

Expand $(x^{2} - 5 x + 6) (x - 2)$ by multiplying each term in the first expression by each term in the second expression.

$\frac{(x - 3) (x^{2} x + x^{2} \cdot - 2 - 5 x \cdot x - 5 x \cdot - 2 + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2

Simplify each term.

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Step 2.2.2.1

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 2.2.2.1.1

Multiply $x^{2}$ by $x$ .

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Step 2.2.2.1.1.1

Raise $x$ to the power of $1$ .

$\frac{(x - 3) (x^{2} x^{1} + x^{2} \cdot - 2 - 5 x \cdot x - 5 x \cdot - 2 + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2.1.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{(x - 3) (x^{2 + 1} + x^{2} \cdot - 2 - 5 x \cdot x - 5 x \cdot - 2 + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2.1.2

Add $2$ and $1$ .

$\frac{(x - 3) (x^{3} + x^{2} \cdot - 2 - 5 x \cdot x - 5 x \cdot - 2 + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2.2

Move $- 2$ to the left of $x^{2}$ .

$\frac{(x - 3) (x^{3} - 2 \cdot x^{2} - 5 x \cdot x - 5 x \cdot - 2 + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2.3

Multiply $x$ by $x$ by adding the exponents.

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Step 2.2.2.3.1

Move $x$ .

$\frac{(x - 3) (x^{3} - 2 x^{2} - 5 (x \cdot x) - 5 x \cdot - 2 + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2.3.2

Multiply $x$ by $x$ .

$\frac{(x - 3) (x^{3} - 2 x^{2} - 5 x^{2} - 5 x \cdot - 2 + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2.4

Multiply $- 2$ by $- 5$ .

$\frac{(x - 3) (x^{3} - 2 x^{2} - 5 x^{2} + 10 x + 6 x + 6 \cdot - 2) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.2.5

Multiply $6$ by $- 2$ .

$\frac{(x - 3) (x^{3} - 2 x^{2} - 5 x^{2} + 10 x + 6 x - 12) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.3

Subtract $5 x^{2}$ from $- 2 x^{2}$ .

$\frac{(x - 3) (x^{3} - 7 x^{2} + 10 x + 6 x - 12) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.4

Add $10 x$ and $6 x$ .

$\frac{(x - 3) (x^{3} - 7 x^{2} + 16 x - 12) - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.5

Expand $(x - 3) (x^{3} - 7 x^{2} + 16 x - 12)$ by multiplying each term in the first expression by each term in the second expression.

$\frac{x \cdot x^{3} + x (- 7 x^{2}) + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6

Simplify each term.

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Step 2.2.6.1

Multiply $x$ by $x^{3}$ by adding the exponents.

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Step 2.2.6.1.1

Multiply $x$ by $x^{3}$ .

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Step 2.2.6.1.1.1

Raise $x$ to the power of $1$ .

$\frac{x^{1} x^{3} + x (- 7 x^{2}) + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.1.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{x^{1 + 3} + x (- 7 x^{2}) + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.1.2

Add $1$ and $3$ .

$\frac{x^{4} + x (- 7 x^{2}) + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.2

Rewrite using the commutative property of multiplication.

$\frac{x^{4} - 7 x \cdot x^{2} + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.3

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.2.6.3.1

Move $x^{2}$ .

$\frac{x^{4} - 7 (x^{2} x) + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.3.2

Multiply $x^{2}$ by $x$ .

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Step 2.2.6.3.2.1

Raise $x$ to the power of $1$ .

$\frac{x^{4} - 7 (x^{2} x^{1}) + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.3.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{x^{4} - 7 x^{2 + 1} + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.3.3

Add $2$ and $1$ .

$\frac{x^{4} - 7 x^{3} + x (16 x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.4

Rewrite using the commutative property of multiplication.

$\frac{x^{4} - 7 x^{3} + 16 x \cdot x + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.5

Multiply $x$ by $x$ by adding the exponents.

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Step 2.2.6.5.1

Move $x$ .

$\frac{x^{4} - 7 x^{3} + 16 (x \cdot x) + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.5.2

Multiply $x$ by $x$ .

$\frac{x^{4} - 7 x^{3} + 16 x^{2} + x \cdot - 12 - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.6

Move $- 12$ to the left of $x$ .

$\frac{x^{4} - 7 x^{3} + 16 x^{2} - 12 \cdot x - 3 x^{3} - 3 (- 7 x^{2}) - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.7

Multiply $- 7$ by $- 3$ .

$\frac{x^{4} - 7 x^{3} + 16 x^{2} - 12 x - 3 x^{3} + 21 x^{2} - 3 (16 x) - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.8

Multiply $16$ by $- 3$ .

$\frac{x^{4} - 7 x^{3} + 16 x^{2} - 12 x - 3 x^{3} + 21 x^{2} - 48 x - 3 \cdot - 12 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.6.9

Multiply $- 3$ by $- 12$ .

$\frac{x^{4} - 7 x^{3} + 16 x^{2} - 12 x - 3 x^{3} + 21 x^{2} - 48 x + 36 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.7

Subtract $3 x^{3}$ from $- 7 x^{3}$ .

$\frac{x^{4} - 10 x^{3} + 16 x^{2} - 12 x + 21 x^{2} - 48 x + 36 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.8

Add $16 x^{2}$ and $21 x^{2}$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 12 x - 48 x + 36 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.9

Subtract $48 x$ from $- 12 x$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - (x + 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.10

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 1 \cdot 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.11

Multiply $- 1$ by $2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) (4 (x - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.12

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) ((4 x + 4 \cdot - 2) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.13

Multiply $4$ by $- 2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) ((4 x - 8) x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.14

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) (4 x \cdot x^{2} - 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.15

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.2.15.1

Move $x^{2}$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) (4 (x^{2} x) - 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.15.2

Multiply $x^{2}$ by $x$ .

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Step 2.2.15.2.1

Raise $x$ to the power of $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) (4 (x^{2} x^{1}) - 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.15.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) (4 x^{2 + 1} - 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.15.3

Add $2$ and $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + (- x - 2) (4 x^{3} - 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.16

Expand $(- x - 2) (4 x^{3} - 8 x^{2})$ using the FOIL Method.

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Step 2.2.16.1

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - x (4 x^{3} - 8 x^{2}) - 2 (4 x^{3} - 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.16.2

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - x (4 x^{3}) - x (- 8 x^{2}) - 2 (4 x^{3} - 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.16.3

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - x (4 x^{3}) - x (- 8 x^{2}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17

Simplify and combine like terms.

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Step 2.2.17.1

Simplify each term.

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Step 2.2.17.1.1

Rewrite using the commutative property of multiplication.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 1 \cdot 4 x \cdot x^{3} - x (- 8 x^{2}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.2

Multiply $x$ by $x^{3}$ by adding the exponents.

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Step 2.2.17.1.2.1

Move $x^{3}$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 1 \cdot 4 (x^{3} x) - x (- 8 x^{2}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.2.2

Multiply $x^{3}$ by $x$ .

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Step 2.2.17.1.2.2.1

Raise $x$ to the power of $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 1 \cdot 4 (x^{3} x^{1}) - x (- 8 x^{2}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.2.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 1 \cdot 4 x^{3 + 1} - x (- 8 x^{2}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.2.3

Add $3$ and $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 1 \cdot 4 x^{4} - x (- 8 x^{2}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.3

Multiply $- 1$ by $4$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} - x (- 8 x^{2}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.4

Rewrite using the commutative property of multiplication.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} - 1 \cdot - 8 x \cdot x^{2} - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.5

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.2.17.1.5.1

Move $x^{2}$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} - 1 \cdot - 8 (x^{2} x) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.5.2

Multiply $x^{2}$ by $x$ .

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Step 2.2.17.1.5.2.1

Raise $x$ to the power of $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} - 1 \cdot - 8 (x^{2} x^{1}) - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.5.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} - 1 \cdot - 8 x^{2 + 1} - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.5.3

Add $2$ and $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} - 1 \cdot - 8 x^{3} - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.6

Multiply $- 1$ by $- 8$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 8 x^{3} - 2 (4 x^{3}) - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.7

Multiply $4$ by $- 2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 8 x^{3} - 8 x^{3} - 2 (- 8 x^{2}) - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.1.8

Multiply $- 8$ by $- 2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 8 x^{3} - 8 x^{3} + 16 x^{2} - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.2

Subtract $8 x^{3}$ from $8 x^{3}$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 0 + 16 x^{2} - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.17.3

Add $- 4 x^{4}$ and $0$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 (x^{2} - 5 x + 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.18

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 ((4 x^{2} + 4 (- 5 x) + 4 \cdot 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.19

Simplify.

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Step 2.2.19.1

Multiply $- 5$ by $4$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 ((4 x^{2} - 20 x + 4 \cdot 6) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.19.2

Multiply $4$ by $6$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 ((4 x^{2} - 20 x + 24) x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.20

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{2} x^{2} - 20 x \cdot x^{2} + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.21

Simplify.

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Step 2.2.21.1

Multiply $x^{2}$ by $x^{2}$ by adding the exponents.

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Step 2.2.21.1.1

Move $x^{2}$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 (x^{2} x^{2}) - 20 x \cdot x^{2} + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.21.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{2 + 2} - 20 x \cdot x^{2} + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.21.1.3

Add $2$ and $2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{4} - 20 x \cdot x^{2} + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.21.2

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.2.21.2.1

Move $x^{2}$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{4} - 20 (x^{2} x) + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.21.2.2

Multiply $x^{2}$ by $x$ .

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Step 2.2.21.2.2.1

Raise $x$ to the power of $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{4} - 20 (x^{2} x^{1}) + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.21.2.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{4} - 20 x^{2 + 1} + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.21.2.3

Add $2$ and $1$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{4} - 20 x^{3} + 24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.22

Apply the distributive property.

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 2 (4 x^{4}) - 2 (- 20 x^{3}) - 2 (24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.23

Simplify.

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Step 2.2.23.1

Multiply $4$ by $- 2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 8 x^{4} - 2 (- 20 x^{3}) - 2 (24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.23.2

Multiply $- 20$ by $- 2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 8 x^{4} + 40 x^{3} - 2 (24 x^{2})}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.2.23.3

Multiply $24$ by $- 2$ .

$\frac{x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 - 4 x^{4} + 16 x^{2} - 8 x^{4} + 40 x^{3} - 48 x^{2}}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.3

Simplify by adding terms.

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Step 2.3.1

Subtract $4 x^{4}$ from $x^{4}$ .

$\frac{- 3 x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + 16 x^{2} - 8 x^{4} + 40 x^{3} - 48 x^{2}}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.3.2

Subtract $8 x^{4}$ from $- 3 x^{4}$ .

$\frac{- 11 x^{4} - 10 x^{3} + 37 x^{2} - 60 x + 36 + 16 x^{2} + 40 x^{3} - 48 x^{2}}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.3.3

Add $- 10 x^{3}$ and $40 x^{3}$ .

$\frac{- 11 x^{4} + 30 x^{3} + 37 x^{2} - 60 x + 36 + 16 x^{2} - 48 x^{2}}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.3.4

Add $37 x^{2}$ and $16 x^{2}$ .

$\frac{- 11 x^{4} + 30 x^{3} + 53 x^{2} - 60 x + 36 - 48 x^{2}}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 2.3.5

Subtract $48 x^{2}$ from $53 x^{2}$ .

$\frac{- 11 x^{4} + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} (x - 2) (x^{2} - 5 x + 6)}$

Step 3

Simplify the denominator.

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Step 3.1

Factor $x^{2} - 5 x + 6$ using the AC method.

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Step 3.1.1

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $6$ and whose sum is $- 5$ .

$- 3, - 2$

Step 3.1.2

Write the factored form using these integers.

$\frac{- 11 x^{4} + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} (x - 2) ((x - 3) (x - 2))}$

$\frac{- 11 x^{4} + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} (x - 2) (x - 3) (x - 2)}$

Step 3.2

Combine exponents.

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Step 3.2.1

Raise $x - 2$ to the power of $1$ .

$\frac{- 11 x^{4} + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} ({(x - 2)}^{1} (x - 2)) (x - 3)}$

Step 3.2.2

Raise $x - 2$ to the power of $1$ .

$\frac{- 11 x^{4} + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} ({(x - 2)}^{1} {(x - 2)}^{1}) (x - 3)}$

Step 3.2.3

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{- 11 x^{4} + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} {(x - 2)}^{1 + 1} (x - 3)}$

Step 3.2.4

Add $1$ and $1$ .

$\frac{- 11 x^{4} + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4

Simplify with factoring out.

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Step 4.1

Factor $- 1$ out of $- 11 x^{4}$ .

$\frac{- (11 x^{4}) + 30 x^{3} + 5 x^{2} - 60 x + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.2

Factor $- 1$ out of $30 x^{3}$ .

$\frac{- (11 x^{4}) - (- 30 x^{3}) + 5 x^{2} - 60 x + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.3

Factor $- 1$ out of $- (11 x^{4}) - (- 30 x^{3})$ .

$\frac{- (11 x^{4} - 30 x^{3}) + 5 x^{2} - 60 x + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.4

Factor $- 1$ out of $5 x^{2}$ .

$\frac{- (11 x^{4} - 30 x^{3}) - (- 5 x^{2}) - 60 x + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.5

Factor $- 1$ out of $- (11 x^{4} - 30 x^{3}) - (- 5 x^{2})$ .

$\frac{- (11 x^{4} - 30 x^{3} - 5 x^{2}) - 60 x + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.6

Factor $- 1$ out of $- 60 x$ .

$\frac{- (11 x^{4} - 30 x^{3} - 5 x^{2}) - (60 x) + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.7

Factor $- 1$ out of $- (11 x^{4} - 30 x^{3} - 5 x^{2}) - (60 x)$ .

$\frac{- (11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x) + 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.8

Rewrite $36$ as $- 1 (- 36)$ .

$\frac{- (11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x) - 1 (- 36)}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.9

Factor $- 1$ out of $- (11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x) - 1 (- 36)$ .

$\frac{- (11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x - 36)}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.10

Simplify the expression.

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Step 4.10.1

Rewrite $- (11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x - 36)$ as $- 1 (11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x - 36)$ .

$\frac{- 1 (11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x - 36)}{4 x^{2} {(x - 2)}^{2} (x - 3)}$

Step 4.10.2

Move the negative in front of the fraction.

$- \frac{11 x^{4} - 30 x^{3} - 5 x^{2} + 60 x - 36}{4 x^{2} {(x - 2)}^{2} (x - 3)}$